Objective: To determine the difference between serum F2-isoprostane
 levels in women with preterm deliveries compared to women
 in normal preterm pregnancies.
 Method: Our study is a cross sectional study. During the period of
 January to August 2012, we collected 72 samples in the Emergency
 Department and Obstetrics and Gynecology outpatient clinic of
 Sanglah hospital, Denpasar. Our sample was divided into two
 groups, 36 cases of preterm deliveries at 28-37 weeks gestational
 age and 36 preterm normal pregnancies at 28-37 weeks gestational
 age. We collected 3 ml of blood sample from the cubital vein and
 quantified the F2-isoprostane levels at the Biology Molecular Laboratory, Faculty of Medicine University of Udayana, Denpasar. Data
 was analyzed using the Shapiro Wilk test and independent t-test
 with significance of =0.05.
 Result: The mean F2-isoprostane level for preterm deliveries and
 preterm normal pregnancies were 0.315 0.292 pg/ml and
 0.017 0.018 pg/ml.
 Conclusion: We can conclude from this study that there is a difference
 in F2-isoprostane serum level in preterm labor and normal preterm
 pregnancies.
 [Indones J Obstet Gynecol 2014; 4: 182-184]
 Keywords: F2-Isoprostane, normal preterm pregnancy, preterm delivery